25453143553 has 24 divisors (see below), whose sum is σ = 26567497800. Its totient is φ = 24380826624.

The previous prime is 25453143497. The next prime is 25453143571. The reversal of 25453143553 is 35534135452.

It can be written as a sum of positive squares in 4 ways, for example, as 17040384 + 25436103169 = 4128^2 + 159487^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25453143553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25453143853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22544293 + ... + 22545421.

It is an arithmetic number, because the mean of its divisors is an integer number (1106979075).

Almost surely, 2^25453143553 is an apocalyptic number.

It is an amenable number.

25453143553 is a deficient number, since it is larger than the sum of its proper divisors (1114354247).

25453143553 is a wasteful number, since it uses less digits than its factorization.

25453143553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441 (or 1398 counting only the distinct ones).

The product of its digits is 540000, while the sum is 40.

The spelling of 25453143553 in words is "twenty-five billion, four hundred fifty-three million, one hundred forty-three thousand, five hundred fifty-three".